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Use SUVAT equations to find height, S, when final velocity, V, is 0: s = ?u = 50 m/sv = 0 m/sa = -9.81 m/st = Not necessaryRecall: v² = u² +2as s = -u²/(2a) = -2500/(...

This is a common class of question concerning projectile motion and the independence of orthogonal forces.
First the student should sketch the problem an label the forces, In doing this they will see...

The photoelectric effect is the observation that when light of a certain frequency or higher is shone onto a particular metal surface, electrons are emitted from the metals surface. Let's consider a devic...

F = qv x B = qvB sin(O). q is the electrons charge = 1.6x10^-19 C. v is the electrons speed = 2x10⁵ ms^-1 . B is the magnetic field strength = 0.5 T. ...

The moderator material is generally graphite or water. These materials do not absorb or react with the neutrons, they simply act to slow down fast moving neutrons. If neutrons are moving too quickly they ...